Review: This problem novel deals with the subject of obesity. Tristan, now 15, is a good student but mostly a social zero because of his weight. He has a couple of close friends and seems to cope pretty well until the entrance of Kelly, his mother's boyfriend's daughter. She thinks of herself as a nutritionist and rags on both Tristan and her father. And she starts dating Tristan's best friend. The book is filled with teen angst including some sexual references.